S parameter from a prototype composite-Higgs modelWe have calculated the low-energy constant L10 in a prototype composite Higgs model with dynamical fermions in two different representations of the gauge group. The resulting contribution of the…Yigal Shamir, Maarten Golterman, William I. Jay et al.·Oct 11, 2021SaveLearn
Anderson Metal-to-Critical Transition in QCDA picture of thermal QCD phase change based on the analogy with metal-to-insulator transition of Anderson type was proposed in the past. In this picture, a low-T thermal state is akin to a metal…Andrei Alexandru, Ivan Horváth·Oct 10, 2021SaveLearn
Determination of the light, strange and charm quark masses using twisted mass fermionsWe present results for the light, strange and charm quark masses using Nf=2+1+1 twisted mass fermion ensembles at three values of the lattice spacing, including two ensembles simulated with the…C. Alexandrou, S. Bacchio, G. Bergner et al.·Oct 9, 2021SaveLearn
Interglueball potential in lattice SU(N) gauge theoriesThe dynamics of the glueballs is important in the context of the experimental search as well as for understanding the non-Abelian gauge theory. The glueballs of the dark SU(Nc) Yang-Mills theory…Nodoka Yamanaka, Atsushi Nakamura, Masayuki Wakayama·Oct 9, 2021SaveLearn
Critical Behaviour in the Single Flavor Planar Thirring ModelWe report results of simulations of the 2+1d Thirring model with N fermion flavors, defined on a lattice using domain wall fermions. This approach is devised to respect as far as possible the…Simon Hands, Michele Mesiti, Jude Worthy·Oct 8, 2021SaveLearn
Higher order quantization conditions for two spinless particlesLattice QCD calculations of scattering phaseshifts and resonance parameters in the two-body sector are becoming precision studies. Early calculations employed L\"uscher's formula for extracting these…Frank X. Lee, Andrei Alexandru, Ruairí Brett·Oct 7, 2021SaveLearn
A Parallel Computing Method for the Higher Order Tensor Renormalization GroupIn this paper, we propose a parallel computing method for the Higher Order Tensor Renormalization Group (HOTRG) applied to a d-dimensional ( d ≥ 2 ) simple lattice model. Sequential…Takumi Yamashita, Tetsuya Sakurai·Oct 7, 2021SaveLearn
Update on (2+1+1)-flavor QCD equation of stateWe report on preliminary results from the calculations of the QCD equation of state for 2+1+1 flavors using HISQ action. The calculations are performed on lattices with temporal extents…Johannes Heinrich Weber, Alexei Bazavov, Peter Petreczky·Oct 7, 2021SaveLearn
The muon g-2 with four flavors of staggered quarksWe present updated results for the light-quark connected part of the leading hadronic contribution to the muon g-2 from configurations with 2+1+1 flavors of HISQ quarks using the time-momentum…Christopher Aubin, Thomas Blum, Maarten Golterman et al.·Oct 7, 2021SaveLearn
Measuring charged particle polarizabilities on the lattice without background fieldsWe show how to compute electromagnetic polarizabilities of charged hadrons without the use of background fields in lattice QCD. The low-energy behavior of the Compton scattering amplitude is matched…Walter Wilcox, Frank X. Lee·Oct 7, 2021SaveLearn
The Evolution of Lattice Field Theory: a Statistical StudyResearchers working in lattice field theory constitute an established community since the early 1990s, and around the same time the online open-access e-print repository arXiv was created. The fact…Wolfgang Bietenholz·Oct 5, 2021SaveLearn
Annihilation diagram contribution to charmonium massesIn this work, we generate gauge configurations with Nf=2 dynamical charm quarks on anisotropic lattices. The mass shift of 1S and 1P charmonia owing to the charm quark annihilation effect can…Renqiang Zhang, Wei Sun, Feiyu Chen et al.·Oct 5, 2021SaveLearn
Critical dynamics of relativistic diffusionWe study the dynamics of self-interacting scalar fields with Z2 symmetry governed by a relativistic Israel-Stuart type diffusion equation in the vicinity of a critical point. We calculate spectral…Dominik Schweitzer, Sören Schlichting, Lorenz von Smekal·Oct 4, 2021SaveLearn
Investigating the low moments of the nucleon structure functions in lattice QCDWe highlight QCDSF/UKQCD Collaboration's recent developments on computing the Compton amplitude directly via an implementation of the second order Feynman-Hellmann theorem. As an application, we…K. U. Can, A. Hannaford-Gunn, E. Sankey et al.·Oct 4, 2021SaveLearn
K- and D(s)-meson leptonic decay constants with physical light, strange and charm quarks by ETMCWe present a lattice QCD computation and preliminary results for the leptonic decay constants of the pseudoscalar mesons K, D and Ds in the isosymmetric QCD limit. The computation is based…P. Dimopoulos, R. Frezzotti, M. Garofalo et al.·Oct 4, 2021SaveLearn
Static Potential At Non-zero Temperatures From Fine LatticesWe report on a preliminary study of static quark anti-quark potential at non-zero temperature in 2+1 flavor QCD using 963× Nτ lattices with lattice spacing a=0.028fm, physical…D. Hoying, A. Bazavov, D. Bala et al.·Oct 1, 2021SaveLearn
Parton physics from a heavy-quark operator product expansion: Lattice QCD calculation of the second moment of the pion distribution amplitudeThe pion light-cone distribution amplitude (LCDA) is a central non-perturbative object of interest for high-energy exclusive processes in quantum chromodynamics. In this article, the second Mellin…William Detmold, Anthony Grebe, Issaku Kanamori et al.·Sep 30, 2021SaveLearn
Nucleon-pion-state contamination in lattice computations of the nucleon electromagnetic form factorsThe nucleon-pion-state contributions to QCD two-point and three-point functions relevant for lattice calculations of the nucleon electromagnetic form factors are studied in chiral perturbation…Oliver Bar, Haris Colic·Sep 30, 2021SaveLearn
Stout-smearing, gradient flow and cSW at one loop orderThe one-loop determination of the coefficient cSW of the Wilson quark action has been useful to push the leading cut-off effects for on-shell quantities to O(α2 a) and, in…Maximilian Ammer, Stephan Durr·Sep 29, 2021SaveLearn
Double parton distributions in the nucleon from lattice simulationsWe provide a first study of Mellin moments of double parton distributions (DPDs) in the nucleon on the lattice, where we consider several combinations of quark flavors and polarizations. These are…Christian Zimmermann·Sep 29, 2021SaveLearn
Strong isospin breaking in Sp(4) gauge theoryA hidden strongly-interacting sector is a possible candidate for dark matter. One scenario consistent with astrophysical constraints is a QCD-like theory with gauge group Sp(4) and two fundamental…Axel Maas, Fabian Zierler·Sep 29, 2021SaveLearn
Finite temperature and delta-regime in the 2-flavor Schwinger modelThe Schwinger model is often used as a testbed for conceptual and numerical approaches in lattice field theory. Still, some of its rich physical properties in anisotropic volumes have not yet been…Ivan Hip, Jaime Fabián Nieto Castellanos, Wolfgang Bietenholz·Sep 28, 2021SaveLearn
Study of a lattice 2-group gauge modelGauge theories admit a generalisation in which the gauge group is replaced by a finer algebraic structure, known as a 2-group. The first model of this type is a Topological Quantum Field Theory…Arkadiusz Bochniak, Leszek Hadasz, Piotr Korcyl et al.·Sep 24, 2021SaveLearn
Quantum State Preparation for the Schwinger ModelIt is not possible, using standard lattice techniques in Euclidean space, to calculate the complete fermionic spectrum of a quantum field theory. Algorithms running on quantum computers have the…Giovanni Pederiva, Alexei Bazavov, Brandon Henke et al.·Sep 24, 2021SaveLearn
Gauge invariant input to neural network for path optimization methodWe investigate the efficiency of a gauge invariant input to a neural network for the path optimization method. While the path optimization with a completely gauge-fixed link-variable input has…Yusuke Namekawa, Kouji Kashiwa, Akira Ohnishi et al.·Sep 24, 2021SaveLearn